Definitions:
rub (someone or something) hard so as to clean them, typically with a brush and water

cancel or abandon (something)

use water to remove impurities from (gas or vapour)

(of a driver) allow (a tyre) to slide or scrape across the road surface so as to reduce speed

(of a rider) rub the arms and legs urgently on a horse's neck and flanks to urge it to move faster

an act of scrubbing something or someone

a semi-abrasive cosmetic lotion applied to the face or body in order to cleanse the skin

special hygienic clothing worn by surgeons during operations

vegetation consisting mainly of brushwood or stunted forest growth

denoting a shrubby or small form of a plant

an insignificant or contemptible person

an informal team game played by children in a public area